#!/usr/bin/ruby
starting=1
bse=gets.to_i
while gets
	n=$_.to_i(bse)
	n+=starting-2
	digits=1
	expbase=1
	if false
		while (x=expbase*(digits*(bse-1)))<=n
			digits+=1
			expbase*=bse
			n-=x
		end
	else
		while digits*expbase*base-(expbase*base-1)/(base-1)<=n
			digits+=1
			expbase*=base
		end
		n-=(digits-1)*expbase-(expbase-1)/(base-1)
	end
	num=expbase+n/digits
	if false
		d=digits-1-n%digits
		d.times{num/=bse}
		puts num%bse
	else
		puts num.to_s(bse)[-(digits-1-n%digits)-1]
	end
end